Is Your Melatonin Actually Helping Your Sleep?
The chronobiology of melatonin & why it hasn't delivered consistent results you hoped for
“I’ve been taking melatonin for two years and I don’t know if it’s doing anything.”
I hear this more than anything else. Someone started because sleep felt off — maybe a friend suggested it was a natural, reasonable option — and now, months or years later, they’re still taking it, still uncertain, and not sure how to think through it.
When a person’s body expects melatonin — is highly individual. The situations where it makes a difference are also narrower than many expect.
If you have been taking melatonin for months and years and you are still struggling with sleep, I explain why that might not be the right tool for your sleep issues, how it might be instead making your sleep worse & what you can do about it.
—Kat
P.S. If you missed last week’s video, I covered 3 underappreciated reasons you may still be waking at 3 a.m. even after moving your caffeine cutoff earlier, cooling down your room, and cutting screens. You can watch it here
References
Kennaway DJ. The dim light melatonin onset across ages, methodologies, and sex and its relationship with morningness/eveningness. Sleep. 2023 May 10;46(5):zsad033.
Cagnacci A, Soldani R, Yen SS. Hypothermic effect of melatonin and nocturnal core body temperature decline are reduced in aged women. J Appl Physiol (1985). 1995 Jan;78(1):314-7.
Sateia MJ, Buysse DJ, Krystal AD, Neubauer DN, Heald JL. Clinical Practice Guideline for the Pharmacologic Treatment of Chronic Insomnia in Adults: An American Academy of Sleep Medicine Clinical Practice Guideline. J Clin Sleep Med. 2017 Feb 15;13(2):307-349. d
Arendt J, Aulinas A. Physiology of the Pineal Gland and Melatonin. [Updated 2022 Oct 30]. In: Feingold KR, Adler RA, Ahmed SF, et al., editors. Endotext [Internet]. South Dartmouth (MA)
Hamel C, Horton J; Authors. Melatonin for the Treatment of Insomnia: A 2022 Update: Rapid Review [Internet]. Ottawa (ON): Canadian Agency for Drugs and Technologies in Health; 2022 May.

